'trouble' can also refer to...

Quick Reference

Difficulty or problems; the Troubles, any of various periods of civil war or unrest in Ireland, especially in 1919–23 and (in Northern Ireland) since 1968; the expression is first recorded in the 19th century as referring to the Irish rebellion of 1641.

never trouble trouble till trouble troubles you proverbial saying, late 19th century; another version of the advice that one should let well alone. (Compare Do not meet troubles halfway.)

a trouble shared is a trouble halved proverbial saying, mid 20th century; meaning that discussing a problem will lessen its impact.